Propuštění starých vojáků - červen 1917

Hi all. Everywhere it says that in the army RU served the soldiers in 53 years. I found in the school chronicle of this entry: The highest decision J. c. and to. Majesty had privates 51 and 52letí completely be released from the military. It was ordered in early June 1917. Below are listed the names of the 3 soldiers who returned. This would be about the years 1865-66. Does anyone know about this something more? Thanks.